c语言sscanf函数的用法是什么
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2022-10-20
java实现学生宿舍系统
本文实例为大家分享了java实现学生宿舍管理系统的具体代码,供大家参考,具体内容如下
学生类代码
Student.java
package dormitory;
public class Student {
private String id;
private String name;
private String sex;
private String dormid;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
public String getDormid() {
return dormid;
}
public void setDormid(String dormid) {
this.dormid = dormid;
}
}
主操作代码
IntailStudent.java
package dormitory;
import java.awt.List;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.Scanner;
import javax.print.DocFlavor.INPUT_STREAM;
import javax.swing.event.ListSelectionEvent;
import org.omg.PortableInterceptor.IORInterceptor;
public class InitailStudent {
private static int n=0;
private static Student[] stu=new Student[100];
//主函数
public static void main(String[] args) throws IOException {
boolean a=false;
boolean b=false;
InitailStudent student=new InitailStudent();
student.judge(a, b);
}
//登入函数
private void judge(boolean a, boolean b) throws IOException
{
do {
System.out.println("欢迎进入登入页面!");
Scanner input=new Scanner(System.in);
System.out.println("请输入账号:");
String account=input.nextLine();
System.out.println("请输入密码:");
String code=input.nextLine();
a=account.equals("admin");
b=code.equals("admin");
} while(!(a==true&&b==true));
Menu();
}
//系统菜单页面
private void Menu() throws IOException{
Scanner input=new Scanner(System.in);
System.out.println("------ 欢迎进入宿舍管理系统 ------");
System.out.println("------ 请选择下列操作 ------");
System.out.println("--- 1.显示所有学生信息 ---"); //Show()
System.out.println("--- 2.查询学生信息 ---"); //Find()
System.out.println("--- 3.增加学生信息 ---"); //Add()
System.out.println("--- 4.修改学生信息 ---"); //Renew()
System.out.println("--- 5.删除学生信息 ---"); //Delete()
System.out.println("--- 0.退出系统 ---");
System.out.println("请输入1~5:");
int a=input.nextInt();
while(a<0||a>5)
{
System.out.println("输入有误,请重新输入:");
a=input.nextInt();
}
switch (a) {
case 1:
Show();
break;
case 2:
Find();
break;
case 3:
Add();
break;
case 4:
Renew();
break;
case 5:
Delete();
break;
case 0:
System.out.println("成功退出系统!");
System.exit(0);
break;
}
}
//显示学生的全部信息
private void Show() throws IOException{
System.out.println("您总录入的信息如下:");
System.out.println("*****************************");
BufferedReader br=new BufferedReader(new FileReader("student.txt"));
String line;
while((line=br.readLine())!=null){
System.out.println(line);
}
br.close();
System.out.println("\n\r");
System.out.println("此次录入的信息为");
System.out.println("*****************************");
int i;
for(i=0;i { System.out.println("学号:"+stu[i].getId()+"\t姓名:"+stu[i].getName()+"\t性别:"+stu[i].getSex()+"\t宿舍号:"+stu[i].getDormid()); } System.out.println("返回主菜单"); Menu(); } //查询学生信息 private void Find() throws IOException{ ArrayList BufferedReader br=new BufferedReader(new FileReader("student.txt")); String line; ArrayList ArrayList while((line=br.readLine())!=null){ list.add(line.toString()); } br.close(); for(int i = 0;i if(i!=0&&list.get(i-1).startsWith("学号")){ validlist.add(list.get(i)); } for (String string : validlist) { String[] split = string.split(" "); ArrayList for (String string2 : split) { tempString.add(string2); } lists.add(tempString); } System.out.println("共有"+lists.size()+"个学生信息"); String[][] stu1=new String[lists.size()][4]; for(int i=0;i for(int j=0;j<4;j++){ stu1[i][j]=lists.get(i).get(j); } System.out.println("请输入学生的学号:"); Scanner input=new Scanner(System.in); String d=input.next(); for(int i=0;i { if(d.equals(stu1[i][0])) { System.out.println("查询成功,以下为该学生的信息"); System.out.println("学号:"+stu1[i][0]+"\t姓名:"+stu1[i][1]+"\t性别:"+stu1[i][2]+"\t宿舍号:"+stu1[i][3]); System.out.println("是否继续查询,否返回菜单,是Y否N"); String cho=input.next(); char ch=cho.charAt(0); while(ch!='Y'&&ch!='y'&&ch!='N'&&ch!='n') { System.out.println("输入有误!请重新输入:"); cho=input.next(); ch=cho.charAt(0); } while(ch=='Y'||ch=='y'){ Find(); } while(ch=='N'||ch=='n'){ Menu(); } } } System.out.println("没有找到该学生,是继续输入,否返回菜单,是Y否N"); String cho=input.next(); char ch=cho.charAt(0); while(ch!='Y'&&ch!='y'&&ch!='N'&&ch!='n') { System.out.println("输入有误!请重新输入:"); cho=input.next(); ch=cho.charAt(0); } while(ch=='Y'||ch=='y'){ Find(); } while(ch=='N'||ch=='n'){ Menu(); } } //增加一个学生 private void Add() throws IOException{ String id; String dormid; String name; String sex; String cho; char ch; stu[n]=new Student(); Scanner input=new Scanner(System.in); if(n==0) { System.out.println("您此次还没有录入任何信息,是否录入,是Y否N"); cho=input.next(); ch=cho.charAt(0); while(ch!='Y'&&ch!='y'&&ch!='N'&&ch!='n') { System.out.println("输入有误!请重新输入:"); cho=input.next(); ch=cho.charAt(0); } while(ch=='Y'||ch=='y'){ break; } while(ch=='N'||ch=='n'){ Menu(); } } FileWriter fw=new FileWriter("student.txt",true); fw.write("\r\n"); fw.write("学号 姓名 性别 宿舍号 \r\n"); System.out.println("请输入学生的学号:"); id=input.next(); stu[n].setId(id); fw.write(stu[n].getId()+" "); System.out.println("请输入学生的姓名:"); name=input.next(); stu[n].setName(name); fw.write(stu[n].getName()+" "); System.out.println("请输入学生的性别:"); sex=input.next(); stu[n].setSex(sex); fw.write(stu[n].getSex()+" "); System.out.println("请输入学生的宿舍号:"); dormid=input.next(); stu[n].setDormid(dormid); fw.write(stu[n].getDormid()+" "); n++; fw.close(); System.out.println("是否继续添加学生?否返回主菜单,是Y否N"); cho=input.next(); ch=cho.charAt(0); while(ch!='Y'&&ch!='y'&&ch!='N'&&ch!='n') { System.out.println("输入有误!请重新输入:"); cho=input.next(); ch=cho.charAt(0); } while(ch=='Y'||ch=='y'){ Add(); } while(ch=='N'||ch=='n'){ Menu(); } } //修改学生信息 private void Renew() throws IOException{ ArrayList BufferedReader br=new BufferedReader(new FileReader("student.txt")); String line; ArrayList ArrayList while((line=br.readLine())!=null){ list.add(line.toString()); } br.close(); for(int i = 0;i if(i!=0&&list.get(i-1).startsWith("学号")){ validlist.add(list.get(i)); } for (String string : validlist) { String[] split = string.split(" "); ArrayList for (String string2 : split) { tempString.add(string2); } lists.add(tempString); } String[][] stu1=new String[lists.size()][4]; for(int i=0;i for(int j=0;j<4;j++){ stu1[i][j]=lists.get(i).get(j); } int temp=0; boolean flag=false; System.out.println("请输入要修改学生的学号:"); Scanner input=new Scanner(System.in); String d=input.next(); for(int i=0;i { while(d.equals(stu1[i][0])) { temp=i; flag=true; break; } } if(!flag) { System.out.println("输入的学号有误,未找到该学生,是否再次进入修改,是Y,否N"); String cho1=input.next(); char ch1=cho1.charAt(0); while (ch1!='N'&&ch1!='n'&&ch1!='Y'&&ch1!='y') { System.out.println("输入无效,请重新输入:"); cho1=input.next(); ch1=cho1.charAt(0); } if (ch1=='y'||ch1=='Y'){ Renew(); } if (ch1=='N'||ch1=='n'){ System.out.println("返回主菜单"); Menu(); } } else { System.out.println("您要修改的学生的信息如下:"); System.out.println("学号:"+stu1[temp][0]+"\t姓名:"+stu1[temp][1]+"\t性别:"+stu1[temp][2]+"\t宿舍号:"+stu1[temp][3]); System.out.println("请以下选择要修改的内容:"); System.out.println("------ 1.姓名 ------"); System.out.println("------ 2.性别 ------"); System.out.println("------ 3.宿舍号 ------"); Scanner input1=new Scanner(System.in); int a=input1.nextInt(); if(a==1) { System.out.println("请输入新的姓名:"); String name=input1.next(); stu1[temp][1]=name; FileWriter fw1=new FileWriter("student.txt"); fw1.write(" "); fw1.close(); FileWriter fw=new FileWriter("student.txt",true); fw.write("\r\n"+" "+"学生信息表\r\n"); for(int i=0;i { fw.write("\r\n学号 姓名 性别 宿舍号 \r\n"); fw.write(stu1[i][0]+" "); fw.write(stu1[i][1]+" "); fw.write(stu1[i][2]+" "); fw.write(stu1[i][3]+" "); } fw.close(); System.out.println("修改成功!"); System.out.println("还要继续修改吗?是继续修改,否返回主菜单,是Y否N"); String cho1=input1.next(); char ch1=cho1.charAt(0); while (ch1!='N'&&ch1!='n'&&ch1!='Y'&&ch1!='y') { System.out.println("输入无效,请重新输入:"); cho1=input.next(); ch1=cho1.charAt(0); } if (ch1=='y'||ch1=='Y'){ Renew(); } if (ch1=='N'||ch1=='n'){ System.out.println("返回主菜单"); Menu(); } } else if(a==2) { System.out.println("请输入新的性别:"); String sex=input1.next(); stu1[temp][2]=sex; FileWriter fw1=new FileWriter("student.txt"); fw1.write(" "); fw1.close(); FileWriter fw=new FileWriter("student.txt",true); fw.write("\r\n"+" "+"学生信息表\r\n"); for(int i=0;i { fw.write("\r\n学号 姓名 性别 宿舍号 \r\n"); fw.write(stu1[i][0]+" "); fw.write(stu1[i][1]+" "); fw.write(stu1[i][2]+" "); fw.write(stu1[i][3]+" "); } fw.close(); System.out.println("修改成功!"); System.out.println("还要继续修改吗?是继续修改,否返回主菜单,是Y否N"); String cho1=input1.next(); char ch1=cho1.charAt(0); while (ch1!='N'&&ch1!='n'&&ch1!='Y'&&ch1!='y') { System.out.println("输入无效,请重新输入:"); cho1=input.next(); ch1=cho1.charAt(0); } if (ch1=='y'||ch1=='Y'){ Renew(); } if (ch1=='N'||ch1=='n'){ System.out.println("返回主菜单"); Menu(); } } else if(a==3) { System.out.println("请输入新的宿舍号:"); String dormid=input1.next(); stu1[temp][3]=dormid; FileWriter fw1=new FileWriter("student.txt"); fw1.write(" "); fw1.close(); FileWriter fw=new FileWriter("student.txt",true); fw.write("\r\n"+" "+"学生信息表\r\n"); for(int i=0;i { fw.write("\r\n学号 姓名 性别 宿舍号 \r\n"); fw.write(stu1[i][0]+" "); fw.write(stu1[i][1]+" "); fw.write(stu1[i][2]+" "); fw.write(stu1[i][3]+" "); } fw.close(); System.out.println("修改成功!"); System.out.println("还要继续修改吗?是继续修改,否返回主菜单,是Y否N"); String cho1=input1.next(); char ch1=cho1.charAt(0); while (ch1!='N'&&ch1!='n'&&ch1!='Y'&&ch1!='y') { System.out.println("输入无效,请重新输入:"); cho1=input.next(); ch1=cho1.charAt(0); } if (ch1=='y'||ch1=='Y'){ Renew(); } if (ch1=='N'||ch1=='n'){ System.out.println("返回主菜单"); Menu(); } } else { System.out.println("输入有误,请重新输入:"); Renew(); } } } //删除学生信息 private void Delete() throws IOException{ ArrayList BufferedReader br=new BufferedReader(new FileReader("student.txt")); String line; ArrayList ArrayList while((line=br.readLine())!=null){ list.add(line.toString()); } br.close(); for(int i = 0;i if(i!=0&&list.get(i-1).startsWith("学号")){ validlist.add(list.get(i)); } for (String string : validlist) { String[] split = string.split(" "); ArrayList for (String string2 : split) { tempString.add(string2); } lists.add(tempString); } String[][] stu1=new String[lists.size()][4]; for(int i=0;i for(int j=0;j<4;j++){ stu1[i][j]=lists.get(i).get(j); } int temp=0; boolean flag=true; System.out.println("请输入你想要删除该学生的学号:"); Scanner input2=new Scanner(System.in); String d=input2.next(); for(int i=0;i { while(d.equals(stu1[i][0])) { temp=i; flag=true; break; } } if(!flag) { System.out.println("输入的学号有误,未找到该学生,再次进入删除,请重新输入:"); String cho1=input2.next(); char ch1=cho1.charAt(0); while (ch1!='N'&&ch1!='n'&&ch1!='Y'&&ch1!='y') { System.out.println("输入无效,请重新输入:"); cho1=input2.next(); ch1=cho1.charAt(0); } if (ch1=='y'||ch1=='Y'){ Delete(); } if (ch1=='N'||ch1=='n'){ System.out.println("返回主菜单"); Menu(); } } else{ System.out.println("您要删除的学生的信息如下:"); System.out.println("学号:"+stu1[temp][0]+"\t姓名:"+stu1[temp][1]+"\t性别:"+stu1[thttp://emp][2]+"\t宿舍号:"+stu1[temp][3]); for (int i=temp;i { stu1[i]=stu1[i+1]; } FileWriter fw1=new FileWriter("student.txt"); fw1.write(" "); fw1.close(); FileWriter fw=new FileWriter("student.txt",true); fw.write("\r\n"+" "+"学生信息表\r\n"); for(int i=0;i { fw.write("\r\n学号 姓名 性别 宿舍号 \r\n"); fw.write(stu1[i][0]+" "); fw.write(stu1[i][1]+" "); fw.write(stu1[i][2]+" "); fw.write(stu1[i][3]+" "); } fw.close(); System.out.println("删除该学生信息成功!"); System.out.println("---------------------"); } System.out.println("还要继续删除吗?是继续删除,否返回主菜单,是Y否N"); String cho2=input2.next(); char ch2=cho2.charAt(0); while (ch2!='N'&&ch2!='n'&&ch2!='Y'&&ch2!='y') { System.out.println("输入无效,请重新输入:"); cho2=input2.next(); ch2=cho2.charAt(0); } if (ch2=='y'||ch2=='Y'){ Delete(); } if (ch2=='N'||ch2=='n'){ System.out.println("返回主菜单"); Menu(); } } }
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